Evidence map›Paper›PMID 40615441›Full record

ArticleNPJ vaccines2025

Intranasal delivery of mRNA expressing newly identified Acinetobacter baumannii antigens protects against bacterial lung disease.

Sophie L Higham, Ziyin Wang, Valarmathy Murugaiah, Jihye Song, Chubicka Thomas, Houze Zhang, Uta Griesenbach, Eric W F W Alton, Luke A Granger, Andrea Flores Esparza and 7 more

Abstract read
In one paragraph

Article in NPJ vaccines, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

7 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Data-driven Atlas ofFrontiers in cellular and infection microbiology · 2026
    Pooled it
  2. Article
  3. Review
  4. Review
  5. Article
  6. Immunology of RNA-based vaccines: The critical interplay between inflammation and expression.Molecular therapy : the journal of the American Society of Gene Therapy · 2025
    Review
  7. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

17 authors.

Sophie L HighamImperial College London, Department of Infectious Disease, London, UK.
Ziyin WangImperial College London, Department of Infectious Disease, London, UK.
Valarmathy MurugaiahImperial College London, Department of Infectious Disease, London, UK.
Jihye SongImperial College London, Department of Infectious Disease, London, UK.
Chubicka ThomasImperial College London, Department of Infectious Disease, London, UK.
Houze ZhangImperial College London, National Heart and Lung Institute, London, UK.
Uta GriesenbachImperial College London, National Heart and Lung Institute, London, UK.
Eric W F W AltonImperial College London, National Heart and Lung Institute, London, UK.
Luke A GrangerImperial College London, Department of Infectious Disease, London, UK.
Andrea Flores EsparzaImperial College London, Department of Infectious Disease, London, UK.
Beatriz Dias BarbieriImperial College London, Department of Infectious Disease, London, UK.
Paul G HitchenImperial College London, Department of Life Sciences, London, UK.
Paul KellamImperial College London, Department of Infectious Disease, London, UK.
Robin J ShattockImperial College London, Department of Infectious Disease, London, UK.
Shiranee SriskandanImperial College London, Department of Infectious Disease, London, UK.
Stephen T Reece *Kymab, a Sanofi Company, Babraham Research Campus, Cambridge, United Kingdom.
John S Tregoning *Imperial College London, Department of Infectious Disease, London, UK. john.tregoning@imperial.ac.uk.

Funding

Bill and Melinda Gates Foundation OPP1159947
6 · The paper itself

Abstract

Vaccines are central to the strategy to control antimicrobial resistant (AMR) bacterial infections; one multidrug resistant pathogen of particular concern is Acinetobacter baumannii. In this study we identified two novel A. baumannii antigens using mass spectrometry and phage expression: Oxa23 and PAL. These genes are highly conserved between different isolates of A. baumannii and recognised by convalescent human sera. We explored their protective immunity using two different vaccine platforms, recombinant outer membrane vesicles (rOMV) and mRNA. RNA vaccine immunised mice had significantly reduced bacterial load in their lower airways following challenge with carbapenem resistant A. baumannii, with Oxa23 providing better protection than PAL. We then compared routes of delivery and RNA vaccine platforms, demonstrating that intranasally delivery of mRNA encoding OXA-23 (formulated with GL67A) significantly reduced disease severity and enhanced bacterial clearance. These studies validate in silico identified antigens through challenge studies and novel mucosal vaccine delivery approaches.

Identifiers

PMID40615441
PMCPMC12227653

What Socratic holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.